apivovarov opened a new issue #4466: topi can not find libtvm_topi.so URL: https://github.com/apache/incubator-tvm/issues/4466 If we print `_LIB`, `_LIB_NAME` in `topi/python/topi/cpp/impl.py`, then you will see None in this case, which means the system is unable to find `libtvm_topi.so`. TOPI [lib_paths](https://github.com/apache/incubator-tvm/blob/605b5e6074f01317b4afe03fc2fe5f58f1b36d89/topi/python/topi/cpp.py#L36) contains: ``` /usr/local/sbin/libtvm_topi.so /usr/local/bin/libtvm_topi.so /usr/sbin/libtvm_topi.so /usr/bin/libtvm_topi.so /sbin/libtvm_topi.so /bin/libtvm_topi.so /usr/local/lib/python3.6/dist-packages/tvm-0.6.0-py3.6-linux-x86_64.egg/tvm/libtvm_topi.so /usr/local/lib/python3.6/dist-packages/build/libtvm_topi.so /usr/local/lib/python3.6/dist-packages/build/Release/libtvm_topi.so /usr/local/lib/python3.6/dist-packages/lib/libtvm_topi.so /usr/local/lib/python3.6/libtvm_topi.so /usr/local/lib/python3.6/dist-packages/topi-0.6.0-py3.6.egg/topi/cpp/libtvm_topi.so /usr/local/sbin/tvm_topi.so /usr/local/bin/tvm_topi.so /usr/sbin/tvm_topi.so /usr/bin/tvm_topi.so /sbin/tvm_topi.so /bin/tvm_topi.so /usr/local/lib/python3.6/dist-packages/tvm-0.6.0-py3.6-linux-x86_64.egg/tvm/tvm_topi.so /usr/local/lib/python3.6/dist-packages/build/tvm_topi.so /usr/local/lib/python3.6/dist-packages/build/Release/tvm_topi.so /usr/local/lib/python3.6/dist-packages/lib/tvm_topi.so /usr/local/lib/python3.6/tvm_topi.so /usr/local/lib/python3.6/dist-packages/topi-0.6.0-py3.6.egg/topi/cpp/tvm_topi.so ``` It does not include topi package installation folder `/usr/local/lib/python3.6/dist-packages/topi-0.6.0-py3.6.egg/topi`. It looks for `tvm_topi.so` inside `cpp` sub-folder
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